密度和施氮量对油菜产量构成因素影响的旋转回归分析  

Analysis of Rotational Regression on Yield Constitute Factors of the Rape In Different Nitrogen and Density

作　　者：艾复清[1] 李改珍[1] 

机构地区：[1]贵州大学农学院农学系,贵阳花溪550025

出　　处：《中国农学通报》2005年第3期123-126,共4页Chinese Agricultural Science Bulletin

基　　金：贵州省"十五"攻关项目子课题"油菜亩产250公斤保优综合配套研究"项目;编号:黔科合农社字(2001)1103-01-01号

摘　　要：运用二因素五水平回归正交旋转组合设计的实验方法,进行氮肥与密度对油菜产量构成因素影响的研究.结果表明,在本试验范围内,施氮量和密度对油菜单株有效角果数均有显著的影响,但密度的变化对单株有效角果数的影响大于氮肥施用量对单株有效角果数的影响.当密度为93.72～105千株/hm2,氮肥施用量为225～227.02kg/hm2时,油菜的单株有效角果数可望达到最高;氮肥和密度对于油菜每角粒数和千粒重的影响不显著.Using quadratic rotational regression combination design to study the influence on yield constitute factors in different nitrogen and density of the rape, the result showed that the influence of density and nitrogen on active silique per plant were significant but the quantity and weight of seed, while the influence of density was higher than that of nitrogen. The result also gave the best combination of density and nitrogen to the active silique per plant.

关 键 词：单株 角果数 施氮量 密度 油莱 氮肥施用量 油菜产量 转回 影响 回归分析 

分 类 号：S565[农业科学—作物学] S512